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Progress, With Caveats

At least 12 million Americans have received coverage directly through a provision of the law.

By

Ezekiel J. Emanuel

March 21, 2014 7:08 p.m. ET

I am neurotic. When things go well, I worry about what can go wrong.

The fourth anniversary of the Affordable Care Act is upon us and things are actually going well. Despite the calamitous rollout of the federal exchanges and persistent headwinds in public opinion, the law is producing real, measurable, positive progress across the health-care system.

Look at access to care. According to Gallup, the percentage of uninsured...